| Effect of bonding parameters on microstructure and properties of Si_3N_4/Si_3N_4 joint brazed by Cu-Zn-Ti filler alloy |
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| 作者姓名： | 张杰 周玉 |
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| 作者单位： | School of Materials Science and Engineering，Harbin Institute of Technology，Harbin 150001，China，Joining and Welding Research Institute，Osaka University，Ibaraki，Osaka 567-0047，Japan |
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| 基金项目： | Project(LC01C12)supportedbytheFoundationofHeilongjiangProvincefortheResearcherReturningfromForeignCountries |
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| 摘 要： | 1INTRODUCTION Si3N4ceramichashighthermalandwearingresistanceandisapromisingmaterialforhightem peratureapplications.However,itisdifficultto manufacturetheSi3N4ceramicworkpieceswithla gerdimensionsandcomplicatedshapesduetoitspoorworkabilityandlowductility.Inrecent20years,manystudieshavebeenfocusedonthetech niquesofceramicjoining,becausethejoiningtech niquescanbeusednotonlyforlow costandhigh reliabilitymanufacturingofceramicpartswith complicatedshapesbutalsoforrepairingofthece ramicpartsinw…
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Effect of bonding parameters on microstructure and properties of Si3N4/Si3N4 joint brazed by Cu-Zn-Ti filler alloy |
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| ZHANG Jie,Naka Massaki,ZHOU Yu.Effect of bonding parameters on microstructure and properties of Si_3N_4/Si_3N_4 joint brazed by Cu-Zn-Ti filler alloy[J].Transactions of Nonferrous Metals Society of China,2005,15(3). |
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| Authors: | ZHANG Jie Naka Massaki ZHOU Yu |
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| Abstract: | Si3N4 ceramic was jointed to Si3N4 ceramic using a filler alloy of Cu-Zn-Ti at 1 123-1 323 K for 0.3 -2.7 ks. Ti content in the Cu-Zn-Ti filler alloy was 15% (molar fraction). The effect of bonding parameters on the microstructure and mechanical properties of the Si3N4/Si3N4 joint were investigated. The results indicate that with increasing brazing temperature from 1 123K to 1 323 K and brazing time from 0.3 ks to 2.7 ks, the thickness of the interfacial reaction layer between the filler alloy and the Si3 N4 ceramic and the size and amount of the reactant products in the filler alloy increase, leading to an increase in shear strength of the joint from 163 MPa to 276 MPa. It is also found that the fracture behavior of the Si3 N4/Si3 N4 joint greatly depends on the microstructure of the joint. |
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| Keywords: | Si3 N4 ceramic Cu-Zn-Ti filler alloy bonding parameters microstructure mechanical property |
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